Pass-through unit 315x200 with a backwater valve for a DN 315mm smooth solid riser pipe inlet for a smooth solid pipe DN 200mm. K31P20ZB

The backwater valve is intended for use in a sanitary or rainwater drainage system. The recommended installation location is the house drain pipe between the building and the main network. The well with a wallet and a backwater valve fulfills the function of an inspection chamber, at the same time securing the building against flooding.